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1.发明授权Gas-diffusion cathode and salt water electrolytic cell using the gas-diffusion cathode 失效使用气体扩散阴极的气体扩散阴极和盐水电解槽
公开(公告)号：US5879521A
公开(公告)日：1999-03-09
申请号：US922604
申请日：1997-09-03
CPC分类号： C25B9/08 , C25B11/035 , H01M4/8626
摘要： A gas-diffusion cathode disposed in contact with an ion-exchange membrane partitioning an electrolytic cell into an anode chamber and a cathode chamber, wherein at least one guide piece is disposed in the gas-diffusion cathode and a salt water electrolytic cell using the above-described gas-diffusion cathode. By using the above-described gas-diffusion cathode for salt water electrolysis, an aqueous caustic alkali solution formed descending in the direction of gravity in the cathode changes direction of movement by contact with a guide piece, whereby the decreased electrode performance resulting from the hindrance of the supply of raw material gas and the discharge of the gas formed caused by the retention of the descending caustic alkali solution is prevented and a large-sized electrolytic cell can be used without problems generally encountered in conventional electrolytic systems.
摘要翻译： 与将电解槽隔离成阳极室和阴极室的离子交换膜接触的气体扩散用阴极，其中，至少一个引导片设置在气体扩散阴极中，使用上述盐水电解池 描述的气体扩散阴极。 通过使用上述的用于盐水电解的气体扩散阴极，在阴极重力方向上下降的苛性碱水溶液通过与引导件接触而改变运动方向，由此产生的阻碍电极性能降低 的原料气体的供给和由下降的苛性碱溶液的保留引起的气体的排放被防止，并且可以使用大尺寸的电解池，而没有常规电解系统中通常遇到的问题。
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公开(公告)号：US5766429A
公开(公告)日：1998-06-16
申请号：US659242
申请日：1996-06-05
CPC分类号： C25B11/035 , C25B1/46 , C25B9/08
摘要： An electrolytic cell for producing sodium hydroxide, etc., which is partitioned by an ion-exchange membrane into an anode chamber and a cathode chamber, wherein at least one of a anode and a cathode is closely contacted to the ion-exchange membrane to form a gas diffusion electrode, and a current supplying means having guides for removing sodium hydroxide, etc., formed at the surface of the gas diffusion electrode is disposed therein closely contacting the gas diffusion electrode. By having a current supplying means having removing guides, sodium hydroxide formed at the surface of the gas diffusion electrode is separated therefrom and removed, whereby the supply of the raw material gas and removal of the produced gas can be smoothly performed without clogging perforations of the gas diffusion electrode with the sodium hydroxide.
摘要翻译： 一种用于生产氢氧化钠等的电解池，其由离子交换膜分隔成阳极室和阴极室，其中阳极和阴极中的至少一个与离子交换膜紧密接触以形成 在气体扩散电极的表面形成有气体扩散电极和具有用于除去氢氧化钠等的引导件的电流供给装置配置在与气体扩散电极紧密接触的位置。 通过具有除去引导件的电流供给装置，在气体扩散电极的表面形成的氢氧化钠被分离并除去，从而可以顺利地进行原料气体的供给和产生的气体的除去，而不会堵塞 气体扩散电极与氢氧化钠。
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公开(公告)号：US5676808A
公开(公告)日：1997-10-14
申请号：US636148
申请日：1996-04-22
CPC分类号： H01M4/8605 , C25B11/03 , C25B11/035 , C25B9/08
摘要： An electrolytic cell for obtaining a caustic alkali by closely contacting a gas diffusion electrode comprising a gas-liquid permeable metal substrate and a gas-liquid permeable collector connected to the substrate to a cation-exchange membrane while supplying an oxygen-containing gas from the opposite side of the cation-exchange membrane. Grooves for taking out a liquid containing a caustic alkali are formed in the contact surface of the gas diffusion electrode with the cation-exchange membrane. By the formation of the grooves, clogging of the perforations of the gas diffusion electrode with the caustic alkali so formed is prevented, whereby the gas supply can be smoothly carried out and the electrolysis can be stably carried out without reducing the cell voltage.
摘要翻译： 一种用于通过将包含气液渗透性金属基板的气体扩散电极和与基板连接的气液渗透性集电体与阳离子交换膜紧密接触而获得苛性碱的电解槽，同时从相对的方向供给含氧气体 侧阳离子交换膜。 在气体扩散电极与阳离子交换膜的接触表面中形成用于取出含有苛性碱的液体的槽。 通过形成槽，防止气体扩散电极的穿孔与这样形成的苛性碱的堵塞，从而可以平稳地进行气体供给，并且可以在不降低电池电压的情况下稳定地进行电解。
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公开(公告)号：US6159349A
公开(公告)日：2000-12-12
申请号：US185034
申请日：1998-11-03
申请人： Shuhei Wakita , Yoshinori Nishiki , Takayuki Shimamune , Yasuo Nakajima , Masaaki Katoh , Yoshiyuki Kawaguchi , Takahiro Ashida , Masaharu Uno
发明人： Shuhei Wakita , Yoshinori Nishiki , Takayuki Shimamune , Yasuo Nakajima , Masaaki Katoh , Yoshiyuki Kawaguchi , Takahiro Ashida , Masaharu Uno
CPC分类号： C02F1/4672 , C02F1/46109 , C02F1/722 , C02F2001/46142 , C02F2001/46166 , C02F2303/04
摘要： An electrolytic cell for producing a brine containing hydrogen peroxide is disclosed. Units for hydrogen peroxide production 3 and units for water electrolysis 2 are alternately arranged in the same electrolytic cell 1. Electrolysis is conducted while supplying hydrogen gas and oxygen gas generating in the respective water electrolysis units to a gas diffusion anode 11 and a gas diffusion cathode 13 of each unit for hydrogen peroxide production, to thereby obtain a brine containing hydrogen peroxide in a high concentration. Furthermore, because the anode of the hydrogen peroxide production units is a hydrogen gas diffusion anode having a reduced oxidizing ability, halogen ions contained in the seawater do not yield harmful halogenated organic substances.
摘要翻译： 公开了一种用于生产含有过氧化氢的盐水的电解池。 用于过氧化氢生产的单元3和水电解单元2交替地布置在同一电解槽1中。在将各个水电解单元中产生的氢气和氧气供应到气体扩散阳极11和气体扩散阴极 13单位用于过氧化氢生产，从而获得含有高浓度过氧化氢的盐水。 此外，由于过氧化氢生产单元的阳极是具有降低的氧化能力的氢气扩散阳极，所以在海水中所含的卤离子不产生有害的卤化有机物质。
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公开(公告)号：US06113757A
公开(公告)日：2000-09-05
申请号：US12001
申请日：1998-01-22
摘要： An electrolytic cell for producing an alkali hydroxide using a gas diffusion cathode. A moistened oxygen-containing gas is uniformly supplied to the surface of the gas diffusion cathode by means of a gas distributing mechanism, such as at least one gas diffuser pipe having a plurality of openings facing the cathode surface.
摘要翻译： 一种使用气体扩散阴极生产碱性氢氧化物的电解槽。 润湿的含氧气体通过诸如至少一个具有面向阴极表面的多个开口的气体扩散管的气体分配机构均匀地供应到气体扩散阴极的表面。
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公开(公告)号：US5827412A
公开(公告)日：1998-10-27
申请号：US881361
申请日：1997-06-24
CPC分类号： C25B1/46 , C25B11/035
摘要： A liquid-permeable gas-diffusion cathode adapted for caustic soda electrolysis in contact with an ion-exchange membrane partitioning an electrolytic cell into an anode chamber and a cathode gas chamber. Plural horizontal concave grooves and/or convex portions are provided in an interval with one another on the surface of the gas-diffusion cathode facing the gas chamber. Plural vertical concave grooves may also be provided in an interval on the surface of the cathode crossing the horizontal grooves and/or convex portions. Aqueous caustic soda solution thus formed flows downward along the grooves, etc., without covering other portions of the cathode surface, and is easily released therefrom without clogging perforations in the gas-diffusion layer of the cathode.
摘要翻译： 一种液体可渗透的气体扩散阴极，其适于与将电解槽分隔成阳极室和阴极气体室的离子交换膜接触的苛性钠电解。 在面对气室的气体扩散阴极的表面上，间隔地设有多个水平凹槽和/或凸部。 也可以在与水平槽和/或凸部交叉的阴极表面上的间隔内设置多个垂直凹槽。 这样形成的碱性苛性钠溶液不会覆盖阴极表面的其它部分而沿着凹槽等向下流动，并且容易地从阴极的气体扩散层中堵塞穿孔而释放。
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公开(公告)号：US5536379A
公开(公告)日：1996-07-16
申请号：US416366
申请日：1995-04-04
CPC分类号： C25B11/035 , H01M4/86
摘要： A gas diffusion electrode comprising a water permeable gas diffusion and reaction layer and a porous and electrically conductive electrode current collector having a water repellency bonded to the gas diffusion and reaction layer.
摘要翻译： 一种气体扩散电极，其特征在于，具有透水性气体扩散反应层和具有与气体扩散反应层接合的斥水性的多孔导电性电极集电体。
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公开(公告)号：US5938901A
公开(公告)日：1999-08-17
申请号：US890667
申请日：1997-07-09
CPC分类号： H01M4/8626 , C25B11/035
摘要： A gas-diffusion electrode (cathode) in contact with an ion-exchange membrane partitioning an electrolytic cell for producing caustic soda, etc., by electrolysis into an anode chamber and a cathode chamber (gas chamber). The gas-diffusion electrode is divided into plural electrode members in the horizontal direction with an interval provided between adjacent electrode members. Electrolyte guide plates may be disposed on the electrode members or between the adjacent electrode members. An aqueous caustic soda solution formed in the electrolysis smoothly is removed from the gas-diffusion electrode without clogging the electrode.
摘要翻译： 与通过电解进入阳极室和阴极室（气室）而分离用于生产苛性钠的电解池的离子交换膜接触的气体扩散电极（阴极）。 气体扩散电极在水平方向上被分成多个电极部件，间隔设置在相邻的电极部件之间。 电解质引导板可以设置在电极构件上或相邻的电极构件之间。 在电解中形成的电解中的苛性钠水溶液从气体扩散电极中除去而不堵塞电极。
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公开(公告)号：US5746896A
公开(公告)日：1998-05-05
申请号：US626925
申请日：1996-04-03
CPC分类号： C25B11/04 , C25B11/03 , H01M4/8853 , H01M4/8885
摘要： A method of producing a gas diffusion electrode by forming a thin layer comprising a carbon power and a silver powder on the surface of a substrate comprising silver, copper, nickel or stainless steel and fluorinating the thin layer make the carbon water repellent. The gas diffusion electrode can be stably used for a long period of time in sodium chloride electrolysis, etc., without clogging the passage of gas and lowering the water repellency of the electrode.
摘要翻译： 通过在包含银，铜，镍或不锈钢的基材的表面上形成包含碳粉和银粉的薄层制造气体扩散电极的方法，并使氟层氟化。 气体扩散电极可以在氯化钠电解等中长期稳定地使用，而不会堵塞气体的通过并降低电极的斥水性。
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公开(公告)号：US5733430A
公开(公告)日：1998-03-31
申请号：US626924
申请日：1996-04-03
CPC分类号： C25B11/0405 , C25B11/035 , C25B11/0489 , H01M4/8605 , H01M4/90
摘要： A gas diffusion electrode is constituted by forming a porous layer comprising a super-fine particle catalyst of silver or gold and a fluorine-containing material on a substrate and connecting a gas-liquid permeable collector to the substrate. The gas diffusion electrode can be used stably as an oxygen cathode for a sodium chloride electrolysis, etc., for a long period of time without causing decreased water repellency of the fluorine-containing material in the gas diffusion electrode and without lowering the activity of the electrode substance.
摘要翻译： 气体扩散电极通过在基板上形成包含银或金的超细颗粒催化剂和含氟材料的多孔层而构成，并将气液渗透性集电体连接到基板。 气体扩散电极可以长时间稳定地用作氯化钠电解等的氧阴极，而不会降低气体扩散电极中的含氟材料的拒水性，并且不会降低气体扩散电极的活性 电极物质。
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